<template>
  <div>
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <el-card>
      <!-- 搜索/添加用户 -->
      <el-row :gutter="20">
        <el-col :span="8">
          <!-- clearable 清空 -->
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
          <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible=true">添加用户</el-button>
        </el-col>
      </el-row>

      <!-- 用户列表 -->
      <el-table :data="userList" border stripe> <!-- 表格斑马纹 -->
        <el-table-column type="index"></el-table-column>  <!-- 索引列 -->
        <el-table-column prop="username" label="姓名"></el-table-column>
        <el-table-column prop="mobile" label="手机"></el-table-column>
        <el-table-column prop="email" label="邮箱"></el-table-column>
        <el-table-column prop="role_name" label="角色"></el-table-column>
        <el-table-column label="状态">
          <template slot-scope="scope"> <!-- 作用域插槽 -->
            <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)">
            </el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作">
           <template slot-scope="scope">
              <el-button type="primary" size="mini" icon="el-icon-edit" @click="showEditDialog(scope.row.id)"></el-button>
              <el-button type="danger" size="mini" icon="el-icon-delete" @click="removeUserById(scope.row.id)"></el-button>
              <el-tooltip content="分配角色" placement="top" :enterable="false">
                <el-button type="warning" size="mini" icon="el-icon-setting" @click="setRole(scope.row)"></el-button>
              </el-tooltip>
           </template>
        </el-table-column>
      </el-table>

      <!-- 添加用户对话框 -->
      <el-dialog
        title="添加用户"
        :visible.sync="addDialogVisible"
        width="50%"
        @close="addDialogClosed">
        
        <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
          <el-form-item label="用户名" prop="username">
            <el-input v-model="addForm.username"></el-input>
          </el-form-item>
          <el-form-item label="密码" prop="password">
            <el-input type="password" v-model="addForm.password"></el-input>
          </el-form-item>
          <el-form-item label="邮箱" prop="email">
            <el-input v-model="addForm.email"></el-input>
          </el-form-item>
          <el-form-item label="手机" prop="mobile">
            <el-input v-model="addForm.mobile"></el-input>
          </el-form-item>
        </el-form>
        
        <span slot="footer" class="dialog-footer">
          <el-button @click="addDialogVisible = false">取 消</el-button>
          <el-button type="primary" @click="addUser">确 定</el-button>
        </span>
      </el-dialog>
    </el-card>

    <!-- 修改用户对话框 -->
    <el-dialog
      title="修改用户"
      :visible.sync="editDialogVisible"
      width="50%"
      @close="editDialogVisibleClosed"
      >
      <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
        <el-form-item label="用户名">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUserInfo">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 分配角色对话框 -->
    <el-dialog
      title="分配角色"
      :visible.sync="setRoleDialogVisible"
      width="50%"
      @close="setRoleDialogClosed"
      >
      <div>
        <p>当前用户：{{ userInfo.username }}</p>
        <p>当前角色：{{ userInfo.role_name }}</p>
        <p>分配新角色：
          <el-select v-model="selectedRoleId" placeholder="请选择">
            <el-option
              v-for="role in roleList"
              :key="role.id"
              :label="role.roleName"
              :value="role.id">
            </el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRightDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
      </span>
    </el-dialog>

  </div>
</template>
<script>
export default {
  data() {
    // 自定义验证邮箱规则
    let checkEmail = (rule, val, cb) => {
      const regEmail = /^[a-zA-Z0-9_-]+@[a-zA-Z0-9_-]+(\.[a-zA-Z0-9_-]+)+$/;
      if(regEmail.test(val)) {
        return cb();
      } else {
        cb(new Error('请输入合法邮箱'))
      }
    };
    // 自定义验证手机规则
    let checkMobile = (rule, val, cb) => {
      const regMobile = /^[1](([3][0-9])|([4][5-9])|([5][0-3,5-9])|([6][5,6])|([7][0-8])|([8][0-9])|([9][1,8,9]))[0-9]{8}$/;
      if(regMobile.test(val)) {
        return cb();
      } else {
        cb(new Error('请输入合法手机号码'))
      }
    };
    return {
      // 获取用户列表的参数
      queryInfo: {
        query: '',
        pagenum: 1,
        pagesize: 10
      },
      userList: [],
      total: 0,

      addDialogVisible: false, // 控制添加用户对话框显示与隐藏
      addForm: { // 添加用户表单数据
        username: ''
      }, 
      addFormRules: {  // 添加表单验证规则对象
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
        ],
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ],
      },

      editDialogVisible: false, // 控制修改对话框显示与隐藏
      editForm: {},   // 查询到的用户信息
      editFormRules: {  // 修改表单验证规则对象
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ]
      },

      setRoleDialogVisible: false, // 当前分配角色对话框显示隐藏
      userInfo: {}, // 需要被分配权限的用户信息,
      roleList: [],   // 所有角色数据列表
      selectedRoleId: '',   // 已选择角色id值
    }
  },
  created() {
    this.getUserList();
  },
  methods: {
    async getUserList() {
      const {data: res} = await this.$http.get('users', { params: this.queryInfo });
      // console.log(res);
      if(res.meta.status != 200) return this.$message.error('获取用户列表失败')
      this.userList = res.data.users;
      this.total = res.data.total;
    },
    async userStateChanged(userInfo) {
      // console.log(userInfo);
      const {data: res} = await this.$http.put(`users/${userInfo.id}/state/${userInfo.mg_state}`);
      if(res.meta.status !== 200) {
        userInfo.mg_state = !userInfo.mg_state;
        return this.$message.error('设置用户状态失败');
      }
      this.$message.success('设置用户状态成功');
    },
    addDialogClosed() { // 监听添加用户对话框的关闭事件
      this.$refs.addFormRef.resetFields();
    },
    addUser() { // 点击按钮，添加用户
      this.$refs.addFormRef.validate(async valid => {
        if(!valid) return;
        // 发起添加用户网络请求
        const {data: res} = await this.$http.post('users', this.addForm);
        if(res.meta.status != 201) {
          this.$message.error('添加用户失败');
        } else {
          this.$message.success('添加用户成功');
          this.addDialogVisible = false;
          this.getUserList();
        }
      })
    },
    async showEditDialog(id) {  // 显示修改对话框
      this.editDialogVisible = true;
      // console.log(id);
      const {data: res} = await this.$http.get('users/' + id);
      // console.log(res);
      if(res.meta.status != 200) {
        return this.$message.error('用户查询失败');
      } else {
        this.editForm = res.data;
        this.editDialogVisible = true;
      }
    },
    editDialogVisibleClosed() { // 监听修改用户对话框的关闭事件
      this.$refs.editFormRef.resetFields();
    },
    editUserInfo() {  // 修改用户信息并提交
      this.$refs.editFormRef.validate(async valid => {
        if(!valid) retrun;
        // 发起修改用户信息的数据请求
        const {data: res} = await this.$http.put('users/' + this.editForm.id, {email: this.editForm.email, mobile: this.editForm.mobile});
        if(res.meta.status != 200) {
          return this.$message.error('更新用户信息失败')
        } else {
          // 关闭对话框
          // 获取用户列表
          // 提示修改成功
          this.editDialogVisible = false;
          this.getUserList();
          this.$message.success('更新用户信息成功')
        }
      })
    },

    async removeUserById(id) { // 根据id删除用户信息
      // 弹窗确认是否删除
      const confirmResult = await this.$confirm('此操作将删除该用户, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err);

      // console.log(confirmResult); // 取消 cancel 确定 confirm
      if(confirmResult != 'confirm') {
        this.$message.info('用户取消删除');
      } else {
        // console.log('用户确认了删除');
        // 发起请求删除用户
        const {data: res} = await this.$http.delete('users/' + id);
        if(res.meta.status != 200) {
          return this.$message.error('删除用户失败');
        } else {
          this.$message.success('删除用户成功');
          this.getUserList();
        }
      }
    },

    async setRole(userInfo) { // 分配用户角色对话框
      this.userInfo = userInfo;
      // 获取所有角色列表
      const {data: res} = await this.$http.get('roles');
      if(res.meta.status != 200) {
        return this.$message.error('获取角色列表失败');
      } else {
        this.roleList = res.data;
        this.setRoleDialogVisible = true;
      }
    },

    async saveRoleInfo() {  // 点击按钮分配角色
      if(!this.selectedRoleId) {  // 
        return this.$message.error('请选择分配的角色');
      }
      const {data: res} = await this.$http.put(`users/${this.userInfo.id}/role`, {rid: this.selectedRoleId});
      if(res.meta.status != 200) {
        return this.$message.error('分配用户角色失败');
      } else {
        this.$message.success('分配用户角色成功');
        this.getUserList();
        this.setRoleDialogVisible = false;
      }
    },
    setRoleDialogClosed() { // 监听分配角色对话框关闭事件
      this.selectedRoleId = '';
      this.userInfo = {};
    }
  }
}
</script>
<style lang="less" scoped>

</style>